RUN apk(\s\S+)*\ add\ \-\-update\ \-\-no\-cache\ ruby\ ruby\-dev\ ruby\-rdoc\ ruby\-irb\ ruby\-libs\ ghostscript\-fonts\ imagemagick\ imagemagick\-dev\ musl\ libxml2\ libxml2\-dev\ libxslt\ libxslt\-dev\ librsvg\ make\ patch\ gcc\ g\+\+\ zlib\-dev\ xvfb\ dbus\ mesa\-dri\-swrast(\s\S+)*